论文标题
红移变性和粘性介质对从重力波信号提取的信息的影响
The effect of redshift degeneracy and the damping effect of viscous medium on the information extracted from gravitational wave signals
论文作者
论文摘要
考虑到宇宙红移$ z_c $，从GW信号中提取的GW源的质量为$ 1+z_c $倍，比其内在值大，检测器和GW源之间的距离应被视为亮度距离。但是，除了宇宙学红移之外，还应考虑其他类型的红移，实际上被忽略了GW数据，例如多普勒红移和重力红移，因此从GW提取的参数可能会偏离其内在值。可能影响GW的另一个因素是GW传播路径中的粘性介质，这可能会以$16πgη$的阻尼速率抑制GW。一些研究表明暗物质可能相互作用，因此暗物质可能是宇宙培养基粘度的起源。然后，GW可能会被暗物质制成的粘性介质迅速减弱，例如中间质量黑洞周围的暗物质“迷你尖峰”。在本文中，我们主要讨论多普勒和引力红移以及粘性介质的阻尼效应如何影响信息，例如从GW信号中提取的GW源的质量和红移。
Considering the cosmological redshift $z_c$ , the mass of GW source extracted from GW signal is $1+z_c$ times larger than its intrinsic value, and distance between detector and GW source should be regarded as luminosity distance. However, besides cosmological redshift, there are other kinds of redshifts should be considered, which is actually ignored, in the analysis of GW data, such as Doppler redshift and gravitational redshift, so the parameters extracted from GW may deviate from their intrinsic values. Another factor that may affect GW is the viscous medium in propagation path of GW, which may damp the GW with a damping rate of $16πGη$. Some studies indicate dark matter may interact with each other, thus dark matter may be the origin of viscosity of cosmic medium. Then the GW may be rapidly damped by the viscous medium that is made of dark matter, such as dark matter "mini-spike" around intermediate mass black hole. In this article, we mainly discuss how Doppler and gravitational redshift, together with the damping effect of viscous medium, affect the information, such as the mass and redshift of GW source, extracted from GW signals.
